Fingernail cleaner brush



FIG. 1 is a perspective view of a fingernail cleaner brush showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is a bottom plan view;

FIG. 4 is a side elevational view; and

FIG. 5 is an end elevational view. 

The ornamental design for fingernail cleaner brush, as shown. 